Študentská vedecká konferencia PF UPJŠ 2015

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Jozef Bednarčík

Crystallography deals with discerning the arrangement and bonding of atoms in crystalline solids. Almost immediately after their discovery, X-rays began to be used to study the internal structure of substances. The first chapter of this textbook deals with the basic concepts of crystallography. At the beginning, crystalline solids are characterized. In the next section, the basic types of bonds and their characteristics are briefly presented. The main subject of this chapter is the interpretation of basic concepts such as symmetry operations, translational periodicity, grid, elementary cell. Spatial lattices and crystal systems are presented. At the end of this chapter, attention is paid to the description of individual types of defects in crystal structures. In the second chapter, the Bohr model of the hydrogen atom is presented. Individual quantum numbers and their meaning are given. Next, energy levels and allowed transitions within an atom with multiple electrons are described. The second chapter concludes with the characterization of the basic absorption and emission processes. The third chapter is devoted to the production of X-ray radiation and its properties. Sources of X-ray radiation and a description of their operation are presented. Interaction of X-ray radiation with matter, absorption and detection of X-ray radiation are the subject of the last part of this chapter.

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Kveta Markušová - Daniela Kladeková

Elektrochémia je veda, ktorá študuje iónové systémy a také procesy alebo javy, ktoré prebiehajú na hranici iónových systémov s kovmi alebo s polovodičmi. V súčasnom štádiu rozvoja môžeme elektrochémiu rozdeliť podľa jej zamerania na dve oblasti. Prvá z nich - ionika - sa zaoberá vlastnosťami iónových sústav (roztoky, taveniny, tuhé elektrolyty). Druhá oblasť - elektrodika - sa zaoberá javmi na fázovom rozhraní elektróda/iónová sústava.

Ionika aj elektrodika skúmajú rovnovážne aj nerovnovážne javy a procesy. Výskumom vlastností iónových sústav za rovnovážnych podmienok získavame informácie a predstavy o štruktúre a zložení roztokov a tavenín elektrolytov, ako aj tuhých elektrolytov, kým merania za nerovnovážnych podmienok referujú o elektrickej vodivosti iónových sústav. V oblasti elektrodiky sa štúdiom rovnováh na rozhraní elektróda/roztok (prípadne tavenina) zaoberá elektrochemická termodynamika. Meranie rýchlostí procesov prebiehajúcich na tomto fázovom rozhraní a vysvetlenie zákonitostí, ktorými sa tieto procesy riadia, je predmetom kinetiky elektródových procesov alebo elektrochemickej kinetiky.

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Norbert Kopčo - Frederick Gallun - Beáta Tomoriová - Ľuboš Hládek(eds.)

Cognitive neuroscience is a fast developing scientific field which aims at uncovering the neural basis of human perception and cognition. To achieve this goal, cognitive neuroscience uses a variety of tools and approaches ranging from non-invasive brain imaging to psychophysics and neural modeling. Mastering such tools requires skills and knowledge from multiple scientific domains, including neurophysiology, cognitive psychology, and several computational fields.

Prístup na požiadanie na email: kogneuro (@) gmail.com

http://pcl.upjs.sk/workshopcd 

https://sites.google.com/site/kogneuro/

E-book

Milan Žukovič

This textbook is intended for master's degree students and is a follow-up to the Computational Physics I course studied at the bachelor's level. The content of the textbook Computational Physics II focuses on stochastic methods of solving physical problems, mainly on Monte Carlo (MC) simulation of many-particle systems. The focus on this computationally intensive approach is motivated by the gradual increase in the computing capacities of ordinary computers as well as the introduction of high-performance computing clusters. This has led to significant progress in the development of new simulation techniques, thanks to which MC simulations have found application in various areas of research and application practice. Considering the main research focus of the department, this text is particularly devoted to the presentation of basic and more advanced MC simulation techniques applied to a simple Ising spin model in order to investigate its magnetic, thermodynamic and critical properties. The next part is devoted to MC simulations of random processes. It focuses on the simplest but also the most basic random walk process and demonstrates its applications in financial analysis and the solution of a quantum system described by the time-dependent Schrödinger equation. The last part is dedicated to the basics of molecular dynamics, applied to simulating the classical movement of atoms in a given force field. By mastering the problems addressed in this course, students will obtain a potential tool for working out of their diploma theses, or a methodology useful for their further scientific and research practice in the field of investigating of complex systems. The lectured topic is subsequently exercised in the form of preparing projects implemented in the freely distributable software Octave, which is easy on the user's programming skills and which students have the opportunity to familiarize themselves with in the previous study.

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Danica Studenovská - Tomáš Madaras 

Táto publikácia je určená pre študentov nematematických odborov na Prírodovedeckej fakulte UPJŠ v Košiciach. Jej obsahom je látka preberaná v prvom semestri v rámci predmetu Matematika I..

Publikácia nadväzuje na učivo stredných škôl a nevyžaduje žiadne predbežné špeciálne znalosti. Môže slúžiť ako základ na ďalšie samostatné štúdium a môže byť užitočná aj pre iných záujemcov o matematiku a jej aplikácie.

Vyriešené príklady v jednotlivých kapitolách majú pomôcť čitateľovi pri zvládnutí štúdia. Tomu napomáhajú aj ilustratívne obrázky.

Autori

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Vladimír Zeleňák (ed.)

Publikácia obsahuje abstrakty príspevkov, ktoré zazneli na Študentskej vedeckej konferencii Prírodovedeckej fakulty UPJŠ v Košiciach, konanej dňa 25. 4. 2013. Podujatie sa nieslo v znamení osláv 50. výročia PF UPJŠ a bolo súčasťou série podujatí s názvom ScienceFest.

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Katarína Cechlárová (ed.)

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Ondrej Hutník

Pojem integrálu je jedným z najvýznamnejších pojmov v matematike vôbec. V naj- primitívnejšej podobe ho používali už starí Gréci pri tvorbe euklidovskej geometrie. No až po Descartovom diele o analytickej geometrii z roku 1637 mohli matematici začať považovať integrál za predmet analýzy. Descartova práca pripravila podmienky pre objav infinitezimálneho počtu Leibnizom a Newtonom okolo roku 1665. V tom čase vznikol veľký spor o prvenstvo tohto objavu, čo rozdelilo učencov Nemecka a Anglicka do dvoch bojujúcich táborov, z ktorých každý fandil svojmu favoritovi. Dnes vieme, že Newtonova práca o fluxiách a fluentoch bola o niečo skoršia, ale Leibnizovo označenie a prístup sa v matematickom svete ujali viac a symboly R a d sa používajú dodnes. Stručný prierez históriou integrálu bude uvedený v Kapitole 1.

Dnes existuje celá hromada skrípt, učebníc, či kníh venovaných výkladu pojmu integrál. Preto pred prvú otázku, či napísať ďalší text o tejto problematike, je postavený každý potenciálny autor. Nás ku kladnej odpovedi na túto otázku doviedla požiadavka študentov nájsť v určitej ucelenej podobe prednášanú problematiku časti zimného semestra druhého ročníka. Druhou motiváciou je trochu odlišný prístup k problematike. Ak si totiž uvedomíme, ktoré metódy sa zvyčajne používajú pri riešení úloh a zís- kavaní rutiny z určitého integrálu, ide hlavne o Newtonovu-Leibnizovu formulu a častokrát na výpočet určitého (Riemannovho) integrálu pomocou definície nezostáva veľa času. Preto sme zaradili pojednanie o Newtonovom integráli v Kapitole 2, ktorý reflektuje túto skutočnosť a má priamy súvis s neurčitým integrálom, ktorého rôznym metódam výpočtu sa venuje relatívne veľa pozornosti v predchádzajúcom semestri. Až za tým v Kapitole 3 vybudujeme teóriu Riemannovho integrálu, uvedieme kritériá jeho existencie, triedy integrovateľných funkcií, základné vlastnosti a nakoniec vzťah s Newtonovým integrálom. Otázky prevažne geometrických aplikácií riešime v Kapitole 4 a v poslednej kapitole sa venujeme rozšíreniu Riemannovho integrálu pre neohraničené funkcie a neohraničené intervaly.

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Natália Raschmanová - Ľubomír Kováč

The text summarizes the basic knowledge about the functioning of the soil ecosystem with a focus on soil protists and dominant groups of soil animals. Characteristics of each soil animal group include basic morphology, ecology, distribution, population dynamics and their importance in the soil ecosystem. The aim of the text is to gain a basic understanding of the diversity and interactions of soil fauna with the soil environment. It deals with the ecological classification of soil fauna on the basis of body size, presence in the soil during the life cycle, food preference and by locomotion. It highlights important morphological and ecophysiological adaptations of soil fauna to physical and chemical environmental factors. The text also gives an overview of the basic methods in the field collection of soil fauna and their extraction from soil samples under laboratory conditions. It further informs on the method of taxonomic identification and ecological evaluation of soil fauna communities. Discusses the soil fauna of different types of ecosystems. It highlights the differences in soil fauna communities that inhabit grassland and forest habitats, and agricultural soils. This teaching material is intended for students in biology degree programmes.

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Zuzana Orságová Králová (ed.)

The scientific book of abstracts is a summary of the contributions of teachers, scientists and other conference participants, which contain the original results of their scientific and research activities. Their work will be the subject of the next domestic conference „New Trends in Chemistry, Research and Education at Faculty of Science of P. J. Šafárik University in Košice 2020“. The conference is a space for dialogue between scientific academics on the one hand and professional staff and students on the other.

The contributions published in this volume can be divided according to content into the field of analytical, inorganic, physical, organic chemistry, biochemistry and didactics of chemistry. All contributions are interesting and can be used in further creative scientific and research work, in the process of education and in practical work.

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Mária Kožurková

Tieto vysokoškolské učebné texty sú určené poslucháčom prvého ročníka magisterského štúdia na Prírodovedeckej fakulte UPJŠ v Košiciach. Rozsah a náplň prác zahrnutých v týchto skriptách vychádza hlavne z časových a priestorových možností s prihliadnutím na materiálovú náročnosť prác. Cieľom týchto skrípt je naučiť študentov základné mikrobiologické techniky a ukázať im význam mikroorganizmov v bežnom živote a ich dôležitú úlohu v prírode. Cvičenia sú zamerané tak, aby si študenti zvýšili svoju technickú zručnosť, naučili sa pracovať podľa bezpečnostných zásad. Text je rozdelený do 13 častí. V úvode každej z nich je uvedená teória k precvičovanej téme. V prílohe je návrh na vypracovanie protokolov k jednotlivým cvičeniam.

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E-book

Jana Shepa (ed.)

The book of abstracts from 6th International Conference on Nanomaterials: Fundamentals and Applications, NFA 2022 is composed of contributions from the participants of this international conference. The conference consisted of 4 invited lecture and 52 abstracts of participants. The conference is focused on nanotechnology and its application in various research areas. All contributions are professionally processed and inspiring.

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Jozef Strečka

The present textbook deals with exactly solved models and their diverse applications in several branches of physics such as mathematical physics, statistical physics, condensed matter physics and so on. Exactly soluble models are currently considered as an inspiring research field in its own right, which regrettably requires a considerable knowledge of sophisticated mathematics. Accordingly, my primary ambition was to provide an intro- ductory course for undergraduate students that would cover the simplest exactly solved models, whose rigorous solutions are available even after modest calculation. The present textbook should be therefore regarded as an auxiliary graduate-level textbook, which should serve as the student’s guide on this beautiful but surely intricate subject.

Even although I attempted to write largely self-contained textbook for undergraduate students, it is worthy of notice that the course on Exactly Solvable Models in Statistical Physics demands essential knowledges from the quantum mechanics, statistical physics, phase transitions and critical phenomena, which are its indispensable prerequisities. The most crucial fundamentals of these theories are briefly recalled in introductory remarks just for remembering and not for substituting those comprehensive courses. The rest of this textbook is entirely devoted to exactly solved lattice-statistical models with the main emphasis laid on their possible applications in the condensed matter physics. It is the author’s hope that the presented exact solutions are detailed enough in order to be easily followed by undergraduate students even without a support of tedious proofs, cumbersome theorems, longer argumentations, or obvious facts. This rather necessary compromise has of course a certain unadvisable impact on ’exactness’ of the presented solutions.

Finally, it is worthwhile to remark that the present textbook makes just a slight introduction into the simplest exactly solvable models and thus, the interested reader is referred for the follow-up study to several excellent books on exactly solved models quoted in the bibliography list on the next page. Note that the listed books were the major knowledge sources used by creating this textbook and they might be regarded as more advanced literature on this exciting research field.

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Ján Guniš - Ľubomír Šnajder

Prílohy

College scripts Programming in Python 1 are intended for future teachers of computer science. The content of the course is related to the teaching of programming in Scratch and is an introduction to text-based programming in Python.

Programming is introduced as a means of developing problem-solving skills. The first chapter is devoted to problem solving. The next 12 chapters sequentially introduce basic language constructions, data structures, and selected types of algorithms. Each of these chapters begins with an introduction to the problem. This section is primarily intended for self-study, to prepare students for the exercises. The following subchapter summarizes and completes the knowledge, and additional insights and approaches related to the chapter topic are presented. The chapters include a collection of exercises designed to practice and deepen knowledge and skills on the topic.

The final part of the chapter presents the solved problems. This section serves as a guide to solving the problems in the collection.

i

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Zuzana Orságová Králová (ed.)

The scientific book of abstracts is a summary of the contributions of teachers, scientists and other conference participants, which contain the original results of their scientific and research activities. Their work will be the subject of the next domestic conference "New trends in chemistry, research and education 2019". The conference is a space for dialogue between scientific academics on the one hand and professional staff and students on the other.

The contributions published in this volume can be divided according to content into the field of analytical, inorganic, physical, organic chemistry, biochemistry and didactics of chemistry. All contributions are interesting and can be used in further creative scientific and research work, in the process of education and in practical work.

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Mariana Budovská

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